CN103210925B - Sterilization composition containing pyrazole naphthalene bacteria amine - Google Patents
Sterilization composition containing pyrazole naphthalene bacteria amine Download PDFInfo
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Abstract
The invention discloses a sterilization composition containing pyrazole naphthalene bacteria amine. Active components are pyrazole naphthalene bacteria amine and methoxyl crylic acid bactericide, wherein the weight ratio of the pyrazole naphthalene bacteria amine to the methoxyl crylic acid bactericide is 1:10 to 8:1, preferably 1:8 to 5:1; and the sterilization composition can be prepared into water dispersible granules, wettable powder and suspending agent. The sterilization composition is reasonable in components and good in sterilization effect; and the activity and the sterilization effect are achieved without simple addition of the activities of all components. Compared with the existing single preparation, the sterilization composition has the obvious sterilization effect and obvious synergism, is high in security and meets security requirement of pesticide preparation, and pollution to crops is avoided; and the sterilization composition has the obvious control efficiency in crop powdery mildew.
Description
Technical field
The present invention relates to a kind of bactericidal composition containing isopyrazam, its active component is isopyrazam and methoxy acrylic acid series bactericidal agent, belongs to technical field of compounded pesticide.
Background technology
Isopyrazam, English common name isopyrazam, chemical name: 3-(methyl fluoride)-1-methyl-N-[1,2,3,4-tetrahydrochysene-9-isopropyl-Isosorbide-5-Nitrae-methylene-5-base]-pyrazole-4-carboxamide.Isopyrazam is mitochondrial respiratory inhibitor, has stronger inhibitory action, fungi is had to the effect suppressing mycelial growth and sporulation to Spores germination, the growth of germ tube and the formation of absorber.
Methoxy acrylic acid series bactericidal agent mainly acts on the cytochrome b el compound in the mitochondrial respiratory chain of fungi, stops electron transmission thus Antifungi growth.There is protection, treat, root out, permeate, systemic activity, and to degrade very soon in plant corpus, in soil and water.Although this series bactericidal agent mechanism of action is unique, the same with other bactericide, methoxy acrylic bactericide is also unable to escape the misfortune of resistance, and use cost is high, so the spread limiting methoxy acrylic acid series bactericidal agent uses.
Introduce several kinds of methoxy acrylic acid series bactericidal agent below:
Kresoxim-methyl, other Chinese name: emerald green shellfish, English common name: kresoxim-methyl, chemical name: methyl (E)-2-methoxyimino-2-[2-(O-toloxyl) phenyl] acetate.Kresoxim-methyl can suppress Spores to invade; there is good prolection; kresoxim-methyl has good activity to fungus-caused multiple diseases such as imperfect fungus, sac fungi, basidiomycetes, Oomycetes; as: the diseases such as grape powdery mildew, wheat rust, potato late blight, pumpkin epidemic disease, rice blast, especially to powdery mildew of strawberry, melon powdery mildew, powdery mildew of cucumber, pear scab special efficacy.
Fluoxastrobin, other Chinese name: Amici reaches, English common name: azoxystrobin, chemical name: (E) 2-[2-[6-(2-cyano-benzene oxygen) pyrimidine-4-yl oxygen] phenyl]-3-methoxy-methyl acrylate.Efficiently, wide spectrum; almost can prevent and treat all fungal diseases; as all having good activity to powdery mildew, rust, glume blight, net blotch, downy mildew, rice blast etc., there is protection, root out, permeating and systemic action, the sprouting of spore and the growth of mycelia can be suppressed.Can be used for cauline leaf process, seed treatment, also can carry out soil treatment.Suitable crop is cereal, paddy rice, grape, potato, vegetables, fruit tree, beans and other crop etc.
Pyraclostrobin, has another name called pyraclostrobin, English common name: Pyraclostrobin, chemical name: N-{2-[1-(4-chlorphenyl)-1H-pyrazole-3-yl oxygen methyl] phenyl } (N-methoxyl group) carbamate.Can prevent and kill off all types of fungal pathogens, fungicidal spectrum is wide, to various crop, comprise wheat class, grape, fruit tree, vegetables multiple diseases effective, be mainly used in preventing and treating grape powdery mildew, downy mildew; Wheat powdery mildew, rust; Leaf rust of barley; The black leaf cecospora spot of banana; Tomato morning, late blight etc.
ZEN 90160, English common name: Picoxystrobin, chemical name: (E)-3-methoxyl group-2-{2-[6-(trifluoromethyl)-2-pyridine oxygen methyl] phenyl } methyl acrylate.ZEN 90160 is Syngenta Co., Ltd's exploitation, and it is fast that this product has infiltration rate, and systemic activity, compared with existing methoxy acrylate bactericide, has stronger result for the treatment of to wheat leaf blight, net blotch and moire disease.Be mainly used in preventing and treating wheat rust, powdery mildew; Leaf rust of barley etc.Increase yield significantly.
ZJ0712; chemical name: (E)-2-[2-(2; 5-dimethyl phenoxy toluene)-phenyl]-3-methoxy-methyl acrylate; ZJ0712 is wide spectrum, the systemic fungicide developed by Zhejiang chemical research institute; bactericidal activity is higher; have protection and therapeutic action concurrently, can be used for preventing and treating the diseases such as powdery mildew, downy mildew, anthracnose.
Summary of the invention
The object of the present invention is to provide a kind of component reasonable, synergistic effect is remarkable, and bactericidal effect is good, and drug cost is low, to the agricultural bactericidal composition of crop safety.
Another object of the present invention is to provide the application of above-mentioned composition in control crop powdery mildew.
In order to overcome the defect of existing unitary agent, technical scheme of the present invention solves like this:
A kind of bactericidal composition containing isopyrazam, its active component is isopyrazam and methoxy acrylic acid series bactericidal agent, the weight ratio of isopyrazam and methoxy acrylic acid series bactericidal agent is 1:10 ~ 8:1, be preferably 1:8 ~ 5:1, be more preferably 1:5 ~ 2:1, most preferably be 1:2 ~ 1:1.The content sum of isopyrazam and methoxy acrylic acid series bactericidal agent is 5% ~ 80% of described composition total weight, is preferably 10% ~ 70%.
Described methoxy acrylic acid series bactericidal agent is kresoxim-methyl, Fluoxastrobin, pyraclostrobin, ZEN 90160 or ZJ0712.
The present invention is water dispersible granules, wetting powder, suspending agent according to the preparation formulation that method known in those skilled in the art can be prepared.
For water dispersible granules, those skilled in the art are familiar with the corresponding auxiliary agent of use and complete the present invention very much.Dispersant as in polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate one or more; Wetting agent as in alkyl sulfate, alkylsulfonate, naphthalene sulfonate one or more; Disintegrant as in ammonium sulfate, urea, sucrose, glucose one or more; Binding agent is as one or more in diatomite, corn starch, PVA, carboxymethyl (ethyl) cellulose family; Filler as diatomite, kaolin, white carbon, fine particle calcium carbonate, talcum powder, attapulgite, potter's clay one or more.
To wetting powder, spendable auxiliary agent has: dispersant as in polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate one or more; Wetting agent as in alkyl sulfate, alkylsulfonate, naphthalene sulfonate one or more; Filler as ammonium sulfate, urea, sucrose, glucose, diatomite, kaolin, white carbon, fine particle calcium carbonate, talcum powder, attapulgite, potter's clay one or more.
To suspending agent, spendable auxiliary agent has: dispersant such as polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate (dispersing agent NNO), Huntsman Corporation of the TERSPERSE 2020(U.S. produce, alkyl naphthalene sulfonic acid salt) in one or more; Emulsifier is as Nongru-700 #(common name: alkyl phenol formaldehyde resin polyoxyethylene ether), agriculture breast 2201, this dish-60#(common name: sorbitan tristearate), Tween-60 #(common name: sorbitan monostearate APEO), agriculture breast 1601#(common name: triphenoethyl benzene phenol polyoxyethylene polyoxypropylene block polymer), Huntsman Corporation of the TERSPERSE 4894(U.S. produces) in one or more; Wetting agent such as alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, alkylphenol-polyethenoxy base ether phosphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, Huntsman Corporation of the TERSPERSE 2500(U.S. produce) in one or more; Thickener as in xanthans, polyvinyl alcohol, bentonite, aluminium-magnesium silicate one or more; Preservative as in formaldehyde, benzoic acid, Sodium Benzoate one or more; Stabilizing agent as in epoxidized soybean oil, epoxychloropropane, triphenyl phosphate one or more; Defoamer is as organic silicon defoamer; Antifreezing agent as ethylene glycol, propane diols, glycerine, urea, inorganic salts as in sodium chloride one or more; Water is deionized water.
The important disease that the crops such as powdery mildew is wheat, melon beans, strawberry, flowers, grape generally occur, often causes very large loss.Isopyrazam and methoxy acrylic acid series bactericidal agent kresoxim-methyl, Fluoxastrobin, pyraclostrobin, ZEN 90160, ZJ0712 mixture is not also had to prevent and treat the relevant report of crop powdery mildew at present; inventor is found by test; by isopyrazam different for the mechanism of action and above-mentioned methoxy acrylic acid series bactericidal agent composite; have significant synergies; treatment, the control efficiency of protection, minimizing dosage can be significantly improved; reduce cost accounting, high to crop safety.
Instant component is reasonable, and treatment adds protective effect, and bactericidal effect is good, and drug cost is low, and its activity and bactericidal effect are not the simple superposition of each composition activity, but has significant synergistic effect, good to crop safety, meets the security requirement of pesticidal preparations.The present invention has good control efficiency to crop powdery mildew.
Embodiment
In order to prevent and treat the wheat powdery mildew of agricultural production, Shaanxi Nong Xin crop Science and Technology Ltd. has carried out mutual composite synergy with isopyrazam and kresoxim-methyl, Fluoxastrobin, pyraclostrobin, ZEN 90160, ZJ0712 and has studied, and concrete grammar is:
Subjects is wheat powdery mildew (Erysiphe graminis).Former medicine is mixed with the test medicine of needs, test method is with reference to " People's Republic of China (PRC) agricultural industry criteria NY/T1156.4-2006 farm-chemical indoor determination test rule bactericide the 4th part: control wheat powdery mildew test pot-culture method ".First single dose and each Mixed Pharmacy are arranged 5 variable concentrations gradients (preventive effect sets by geometric progression in the scope of 5% ~ 90%).Select susceptible wheat breed potted plant, treat that seedling grew to for 2 leaf ~ 3 leaf phases for subsequent use.The Powdery Mildew Fresh spores that morbidity wheat leaf blade produces in 24h is evenly shaken off to be inoculated in process 2 leaf phase ~ 3 leaf phase potted plant wheat seedlings on.Often process is no less than 3 basins, the strain of every basin 10.After inoculating 24 h, by spray-on process, medicament is evenly sprayed on wheat seedling for subsequent use, cultivates under then putting suitable condition.When contrast wheat seedling is fully fallen ill all blades of " Invest, Then Investigate " every basin wheat seedling, adopt following stage division:
0 grade: anosis;
1 grade: lesion area accounts for less than 5% of one-piece blade area;
3 grades: lesion area accounts for 6% ~ 15% of one-piece blade area;
5 grades: lesion area accounts for 16% ~ 25% of one-piece blade area;
7 grades: lesion area accounts for 26% ~ 50% of one-piece blade area;
9 grades: lesion area accounts for more than 50% of one-piece blade area.
Computational methods:
Disease index=[∑ (the sick number of sheets × relative level numerical value at different levels)/(investigation total leaf number × 9)] × 100
Control efficiency (%)=[(contrast disease index-process disease index)/contrast disease index] × 100
By the linear regression analysis between the probit value of preventive effect and the logarithm value of series concentration, obtain the EC of each medicament
50value, calculates the co-toxicity coefficient (CTC) of mixture, evaluates the activity of reagent agent to germ with this by the abundant method of Sun Yun.
The co-toxicity coefficient (CTC) >=120 of complex preparation shows as synergistic effect; CTC≤80 show as antagonism; 80 < CTC < 120 show as summation action.
Toxicity Determination result shows: isopyrazam and kresoxim-methyl, Fluoxastrobin, pyraclostrobin, ZEN 90160, ZJ0712 are that 1:10 ~ 8:1 is mixed with weight ratio has good virulence to wheat powdery mildew, all having good synergistic effect, is that 1:8 ~ 5:1 synergy is the most remarkable especially with weight ratio.
In order to prevent and treat the powdery mildew of cucumber of agricultural production, Shaanxi Nong Xin crop Science and Technology Ltd. has carried out mutual composite synergy with isopyrazam and kresoxim-methyl, Fluoxastrobin, pyraclostrobin, ZEN 90160, ZJ0712 and has studied, and concrete grammar is:
Subjects is cucumber powdery mildew's pathogen sphaerotheca fuliginea.Former medicine is mixed with the test medicine of needs, test method is with reference to " People's Republic of China (PRC) agricultural industry criteria NY/T1156.11-2008 farm-chemical indoor determination test rule bactericide the 11st part: control cucurbits powdery mildew test pot-culture method ".First single dose and each Mixed Pharmacy are arranged 5 variable concentrations gradients (preventive effect sets by geometric progression in the scope of 5% ~ 90%).With the pure water being added with a small amount of surfactant (Tween 80), wash the Fresh spores got and cover with on Powdery Mildew cucumber leaves, filter with double gauze, make the suspension that spore concentration is 1 × 105 spore/milliliter, for subsequent use.Often process 3 basins, repeat for 4 times, and establish the process only containing solvent and surfactant not containing active ingredient to make blank.With spore suspension 24 h inoculations before chemicals treatment, liquid is evenly sprayed in blade face to all wetting, for subsequent use after liquid natural air drying.Inoculation and chemicals treatment after potted plant cucumber natural air drying, then move to thermostatic chamber, under the condition of temperature 20 DEG C ~ 24 DEG C cultivation 7 days ~ 10 days.When the sick leaf rate of blank reaches more than 80%, classification investigation manages incidence everywhere, and often process and at least investigate 30 leaves, grade scale is:
0 grade: anosis;
1 grade: lesion area accounts for less than 5% of one-piece blade area;
3 grades: lesion area accounts for 6% ~ 15% of one-piece blade area;
5 grades: lesion area accounts for 16% ~ 25% of one-piece blade area;
7 grades: lesion area accounts for 26% ~ 50% of one-piece blade area;
9 grades: lesion area accounts for 50% ~ 75% of one-piece blade area;
11 grades: lesion area accounts for more than 75% of one-piece blade area.
Computational methods:
Disease index=[∑ (the sick number of sheets × relative level numerical value at different levels)/(investigation total leaf number × 11)] × 100
Control efficiency (%)=[(contrast disease index-process disease index)/contrast disease index] × 100
By the linear regression analysis between the probit value of preventive effect and the logarithm value of series concentration, obtain the EC of each medicament
50value, calculates the co-toxicity coefficient (CTC) of mixture, evaluates the activity of reagent agent to germ with this by the abundant method of Sun Yun.
The co-toxicity coefficient (CTC) >=120 of complex preparation shows as synergistic effect; CTC≤80 show as antagonism; 80 < CTC < 120 show as summation action.
Toxicity Determination result shows: isopyrazam and kresoxim-methyl, Fluoxastrobin, pyraclostrobin, ZEN 90160, ZJ0712 are that 1:10 ~ 8:1 is mixed with weight ratio has good virulence to cucumber powdery mildew's pathogen, all having good synergistic effect, is that 1:8 ~ 5:1 synergy is the most remarkable especially with weight ratio.
Below in conjunction with embodiment, content of the present invention is described further.
Example of formulations 1
Take 10% isopyrazam, 70% kresoxim-methyl, 1% TERSPERSE 2700(polycarboxylate, Huntsman Corporation of the U.S. produces), 1% dispersing agent NNO (alkylnaphthalene sulfonate formaldehyde condensation products), 1% Nekal BX (nekal), 1% K-12(lauryl sodium sulfate), 1% carboxymethyl cellulose, diatomite adds to 100% weight portion.Namely the method for above-mentioned raw materials frequent regulation water intaking dispersible granule mixes, ultra micro air-flow crushing, mixing, granulation step produce 80% isopyrazam water dispersion granules agent of Kresoxim.
Example of formulations 2
Take 40% isopyrazam, 5% Fluoxastrobin, 3% TERSPERSE 2700,3% dispersing agent NNO, 2% Nekal BX, 2%K-12,1% carboxymethyl cellulose, 5% urea, diatomite adds to 100% weight portion.Namely the method for above-mentioned raw materials frequent regulation water intaking dispersible granule mixes, ultra micro air-flow crushing, mixing, granulation step produce 45% isopyrazam azoxystrobin water dispersible granule.
Example of formulations 3
20% isopyrazam, 20% pyraclostrobin, 4% TERSPERSE 2700,2% dispersing agent NNO, 2% Nekal BX, 2%K-12,3% corn starch, 5% sulphur ammonium, attapulgite add to 100% weight portion.Namely the method for above-mentioned raw materials frequent regulation water intaking dispersible granule mixes, ultra micro air-flow crushing, mixing, granulation step produce 40% isopyrazam pyraclostrobin water dispersible granule.
Example of formulations 4
Take 5% isopyrazam, 40% ZEN 90160,4% Morwet D-425(alkyl naphthalene sulfonic acid condensation polymer sodium salt, Akzo Nobel N.V. produces), 3% dispersing agent NNO, 2% Nekal BX, 2%K-12,3% corn starch, 5% sucrose, kaolin adds to 100% weight portion.Namely the method for above-mentioned raw materials frequent regulation water intaking dispersible granule mixes, ultra micro air-flow crushing, mixing, granulation step produce 45% isopyrazam ZEN 90160 water dispersible granules.
Example of formulations 5
Take 5% isopyrazam, 50% ZJ0712,3% TERSPERSE 2700,3% dispersing agent NNO, 2% Nekal BX, 2%K-12,1% carboxymethyl cellulose, 5% urea, diatomite adds to 100% weight portion.Namely the method for above-mentioned raw materials frequent regulation water intaking dispersible granule mixes, ultra micro air-flow crushing, mixing, granulation step produce 55% isopyrazam ZJ0712 water dispersible granules.
Example of formulations 6
Take 10% isopyrazam, 20% kresoxim-methyl, 4% calcium lignosulfonate, 3% TERSPERSE 2700,2% Nekal BX, 2%K-12,3% White Carbon black, fine particle calcium carbonate add to 100% weight portion.Above-mentioned raw materials, through mixing, obtains 30% isopyrazam kresoxim-methyl wetting powder after air-flow crushing.
Example of formulations 7
Take 30% isopyrazam, 6% Fluoxastrobin, 4% calcium lignosulfonate, 4% dispersing agent NNO, 2% Nekal BX, 2%K-12,3% White Carbon black, attapulgite add to 100% weight portion.Above-mentioned raw materials, through mixing, obtains 36% isopyrazam Fluoxastrobin wetting powder after air-flow crushing.
Example of formulations 8
Take 5% isopyrazam, 25% pyraclostrobin, 4% calcium lignosulfonate, 4% dispersing agent NNO, 2% Nekal BX, 2%K-12,3% White Carbon black, attapulgite add to 100% weight portion.Above-mentioned raw materials, through mixing, obtains 30% isopyrazam pyraclostrobin wetting powder after air-flow crushing.
Example of formulations 9
Take 12% isopyrazam, 24% ZEN 90160,4% calcium lignosulfonate, 3% TERSPERSE 2700,2% Nekal BX, 2%K-12,3% White Carbon black, fine particle calcium carbonate add to 100% weight portion.Above-mentioned raw materials, through mixing, obtains 36% isopyrazam ZEN 90160 wetting powder after air-flow crushing.
Example of formulations 10
Take 24% isopyrazam, 8% ZJ0712,5% calcium lignosulfonate, 2% Nekal BX, 2%K-12,5% White Carbon black, kaolin adds to 100% weight portion.Above-mentioned raw materials, through mixing, obtains 32% isopyrazam ZJ0712 wetting powder after air-flow crushing.
Example of formulations 11
Take 9% isopyrazam, 27% kresoxim-methyl, Huntsman Corporation of the 4%TERSPERSE 4894(U.S. produce), Huntsman Corporation of the 1.5%TERSPERSE 2500(U.S. produces), Huntsman Corporation of the 2%TERSPERSE 2020(U.S. produces), 1% aluminium-magnesium silicate, 0.2% xanthans, 5% ethylene glycol, 0.5% formaldehyde, 0.5% silicone defoaming agent (trade name: s-29 Nanjing "four news" (new ideas applied chemistry product Company), 2% triphenyl phosphate, deionized water add to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear dispersion 30min, with 36% isopyrazam kresoxim-methyl suspending agent obtained after sand mill sand milling.
Example of formulations 12
Take 12% isopyrazam, 18% Fluoxastrobin, this dish of 2%TERSPERSE 2020,2%-60#, 2% Tween-60 #, 1%TERSPERSE 2500,0.5% white carbon, 0.3% xanthans, 5% ethylene glycol, 0.5% benzoic acid, 0.5% silicone defoaming agent, 1% epoxychloropropane, deionized water add to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear dispersion 30min, with 30% isopyrazam Fluoxastrobin suspending agent obtained after sand mill sand milling.
Example of formulations 13
Take 18% isopyrazam, 9% pyraclostrobin, this dish of 2%TERSPERSE 2020,2%-60#, 2% Tween-60 #, 1%TERSPERSE 2500,0.5% white carbon, 0.3% xanthans, 5% ethylene glycol, 0.5% benzoic acid, 0.5% silicone defoaming agent, 1% epoxychloropropane, deionized water add to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear dispersion 30min, with 27% isopyrazam pyraclostrobin suspending agent obtained after sand mill sand milling.
Example of formulations 14
Take 2% isopyrazam, 3% ZEN 90160,1%TERSPERSE 2020,3% agriculture breast 1601#, 2% agriculture breast 2201#, 1%TERSPERSE 2500,0.3% xanthans, 5% ethylene glycol, 0.5% formaldehyde, 0.5% silicone defoaming agent, 1% epoxychloropropane, deionized water add to 100% weight portion.High speed shear dispersion 30min, with 5% isopyrazam ZEN 90160 suspending agent obtained after sand mill sand milling.
Example of formulations 15
Take 10% isopyrazam, 10% ZJ0712,4%TERSPERSE 4894,1.5%TERSPERSE 2500,1%TERSPERSE 2020,0.2% aluminium-magnesium silicate, 5% ethylene glycol, 0.5% formaldehyde, 0.5% silicone defoaming agent, 1% epoxychloropropane, deionized water add to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear dispersion 30min, with 20% isopyrazam ZJ0712 suspending agent obtained after sand mill sand milling.
Biological Examples: control powdery mildew of strawberry field trial
Within 2012, carried out example of formulations 6(30% isopyrazam kresoxim-methyl wetting powder in Zhouzhi County, Shaanxi Province), example of formulations 12(30% isopyrazam Fluoxastrobin suspending agent), example of formulations 3(40% isopyrazam pyraclostrobin water dispersible granule), example of formulations 9(36% isopyrazam ZEN 90160 wetting powder), example of formulations 15(20% isopyrazam ZJ0712 suspending agent) prevent and treat powdery mildew of strawberry field trial, verify the control efficiency of this medicament to powdery mildew of strawberry and the safety to strawberry.Test method is with reference to " GB/T 17980.119-2004 pesticide field efficacy medicine test criterion (two) the bactericidal agent for preventing and treating powdery mildew of strawberry test of pesticide effectiveness ".Trial crops is strawberry, and controlling object is powdery mildew (Sphaerotheca macularis).Carry out in the greenhouse strawberry base of plantation more than 2 years continuously.Test medicine and extension rate refer to table 3.Separately establish blank, often process 4 times and repeat, every community 20 ㎡, Gong48Ge community, random district group arranges.Adopt conventional spray-on process, mu dispenser liquid 50kg, evenly sprays complete stool.1st dispenser is at Strawberry Seedlings powdery mildew their early stage, and second time medication afterwards in 7 days, is total to dispenser 2 times.
Investigation and statistical method:
7 days investigation blade incidences after 7 days and second time medicine after first time medicine.Every community diagonal 5 sampling, often some investigation 3 strains.Whole blade is investigated in every strain.
Stage division:
0 grade: without scab;
1 grade: lesion area accounts for less than 5% of whole leaf area;
3 grades: lesion area accounts for 6% ~ 15% of whole leaf area;
5 grades: lesion area accounts for 16% ~ 25% of whole leaf area
7 grades: lesion area accounts for 26% ~ 50% of whole leaf area;
9 grades: lesion area accounts for more than 50% of whole leaf area.
Refer to calculate preventive effect according to disease.After each medicine after visual observations dispenser on the situation that affects of strawberry growth, leaf look etc., examination medicament to the safety of strawberry.
Disease index=[∑ (the sick number of sheets × relative level numerical value at different levels)/(investigation total leaf number × 9)] × 100
Control efficiency (%)=[(contrast disease index-process disease index)/contrast disease index] × 100.
Field test results shows: 30% isopyrazam kresoxim-methyl wetting powder 1500 times, 30% isopyrazam Fluoxastrobin suspending agent 1500 times, 40% isopyrazam pyraclostrobin water dispersible granule 2000 times, 36% isopyrazam ZEN 90160 wetting powder 2000 times, 20% isopyrazam ZJ0712 suspending agent 1500 doubly has good control efficiency to powdery mildew of strawberry, after medicine, the preventive effect of 7 days is respectively 81.41% for the first time, 83.72%, 85.19%, 86.76%, 80.88%, after second time medicine, the preventive effect of 7 days is 88.68%, 90.55%, 91.07%, 92.36%, 87.75%, obviously be better than the preventive effect (see table 3) of 6 kinds of single doses such as 30% isopyrazam suspending agent, 1500 times of grades.
Under this experimental condition, visual observations reagent agent is to the safety of strawberry, and result shows, and this several medicament all produces without poisoning From Strawberry Leaves, petiole and flowers and fruits, performance safety.
Result of the test significantly improves the control efficiency to powdery mildew of strawberry after showing isopyrazam and kresoxim-methyl, Fluoxastrobin, pyraclostrobin, ZEN 90160, ZJ0712 mixture, to strawberry growth safety, is the favourable agents of control powdery mildew of strawberry.
In sum, composition of the present invention is employing two kinds of active component compound schemes, its activity and bactericidal effect are not the simple superposition of each composition activity, compared with existing unitary agent, except there is significant bactericidal effect, and there is significant synergistic effect, pollution-free to crop, safety is good, meets the security requirement of pesticidal preparations.
Claims (9)
1., containing a bactericidal composition for isopyrazam, it is characterized in that bactericidal composition active component is isopyrazam and ZJ0712, wherein the weight ratio of isopyrazam and ZJ0712 is 1:10 ~ 8:1.
2., according to claim 1 containing the bactericidal composition of isopyrazam, it is characterized in that: the weight ratio of isopyrazam and ZJ0712 is 1:8 ~ 5:1.
3., according to claim 2 containing the bactericidal composition of isopyrazam, it is characterized in that: the weight ratio of isopyrazam and ZJ0712 is 1:5 ~ 2:1.
4., according to claim 3 containing the bactericidal composition of isopyrazam, it is characterized in that: the weight ratio of isopyrazam and ZJ0712 is 1:2 ~ 1:1.
5., according to one of any described bactericidal composition containing isopyrazam of Claims 1-4, it is characterized in that: the content sum of isopyrazam and ZJ0712 is 5% ~ 80% of described composition total weight.
6., according to claim 5 containing the bactericidal composition of isopyrazam, it is characterized in that: the content sum of isopyrazam and ZJ0712 is 10% ~ 70% of described composition total weight.
7., according to one of any described bactericidal composition containing isopyrazam of Claims 1-4, it is characterized in that: described combination dosage form is water dispersible granules, wetting powder or suspending agent.
8. one of any described application of bactericidal composition on control crop powdery mildew containing isopyrazam of Claims 1-4.
9. apply according to claim 8, crop powdery mildew is wheat powdery mildew, powdery mildew of cucumber or powdery mildew of strawberry.
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| CN110651790A (en) * | 2019-11-05 | 2020-01-07 | 广西壮族自治区亚热带作物研究所（广西亚热带农产品加工研究所） | Bactericidal composition for preventing and treating pineapple anthracnose |
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| CN105309458A (en) * | 2014-07-30 | 2016-02-10 | 深圳诺普信农化股份有限公司 | Synergic sterilizing composition and application thereof |
| CN105766955A (en) * | 2016-04-26 | 2016-07-20 | 南京华洲药业有限公司 | Sterilization composition containing isopyrazam and propamocarb and application of sterilization composition |
| CN106508945B (en) * | 2016-11-11 | 2019-02-19 | 山东农业大学 | A kind of bactericidal composition and its preparation and application containing isopyrazam and iprodione |
| CN111543439A (en) * | 2020-05-19 | 2020-08-18 | 渭南职业技术学院 | Agricultural bactericidal composition |
| CN112438267A (en) * | 2020-12-01 | 2021-03-05 | 南京拓呗新材料科技有限公司 | Pyridinaphthalene-azoxystrobin water suspending agent preparation and preparation process thereof |
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| CN103210925A (en) | 2013-07-24 |
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